bookrandom Chapter 585 What you thought was a random idea actually existed a long time ago!
Chapter 585 What you thought was a random idea actually existed a long time ago!
"A tactical force with the army at its core and integrating multi-service joint combat capabilities!"
"Basic configuration: tank battalion, artillery battalion, air defense battalion, support and logistics battalion!"
"Features: Breaking away from the traditional boundaries of a single branch of service, it achieves 'mission-oriented formations' through combination, and flexibly adjusts the force structure according to combat needs!"
"Difficulty: Battlefield information cannot be transmitted in a timely manner."
The old comrade marked this sentence over and over again with a red pen, and added several exclamation marks to show how important it was.
"Ideal: To conduct integrated air-ground strikes, area denial, and other missions in coordination with ground forces!"
Case solved!
No wonder this rotating detachment is composed of different branches of the military. Is this a preliminary exploration of a "combined arms brigade"?
That's some serious insight! No wonder you listened with such enthusiasm to that story that was yet to happen, like "Star Wars"!
Was this something you had planned all along?
Just as Jiang Xia was stunned and speechless, the old comrade leaned over and removed two exclamation marks after the phrase "battlefield information could not be transmitted in a timely manner," which he had emphasized.
"Hehehe, I was originally going to remove them all. But after hearing you mention satellite positioning, I'll keep two more. If you're right, I'll be impressed!"
Hey! Who do you think you are! I'll just have to paint you a super rosy picture...
Just as Jiang Xia was gathering his thoughts and preparing for a long speech, the old comrade smiled and said, "Yes, it can be done soon!"
Oh dear...
You might as well kill me then, our satellite program hasn't even started yet...
Even if it's happening, it's not something that's happening anytime soon...
Jiang Xia knew that the "sooner" these old comrades were talking about definitely wasn't the "sooner" in the Five-Year Plan. The more impatient ones would love for you to say you could do it today and have the prototype ready tomorrow.
Moreover, Jiangxia has no knowledge of satellite positioning. He might be able to handle satellite components, but for high-end things like positioning and navigation, we'll probably have to bring back "Goddess" (a nickname for a female expert).
The little ahoge (cowlick) went silent...
"What, you can't handle it anymore?"
Hey, how can you say no! Jiang Xia started spinning around.
I've got it! Radio triangulation!
Where's Baoqiang? Come here, help me use my brain!
What was the simplified formula again? It was when the green bubble first came out, and some expert used the shake function to pinpoint the exact location, right? I even studied it seriously back then.
(Please note that using this method without the other person's consent will result in legal consequences!)
Got it!
Assumption: The azimuth angle measured by each receiving point corresponds to a ray emanating from the receiving point, and the intersection of two rays is the target position (two-dimensional planar positioning); if three-dimensional positioning is required, at least three receiving points are needed.
设接收点A(x1,y1)和B(x2,y2)测得目标方位角分别为θA和θB，则目标坐标(x,y)满足：tan(θA)=y?y1/x?x1,tan(θB)=y?y2/x?x2
Solving the simultaneous equations will give you x and y!
That's it!
No, this is just angle measurement. There's also distance measurement, how do you do that...?
Jiang Xia searched through his entire memory but couldn't recall the thing. He only found a quote from a blogger:
"This method is marked as difficult to publish on the platform, haha, friends and family, let's keep it brief. Just know the result! Please give me lots of likes!"
You're kidding me! I've cheated to this extent, using my brain like a computer, and this still can't solve radio positioning?
Jiangxia was depressed.
Fortunately, Baoqiang watched for a while with a cigar in his mouth, then beckoned to Jiang Xia with his finger.
"Watch closely! This is the cigar positioning method I've figured out! But only Jin Zhen can use and master it; no one else can figure it out!"
设信号到达接收点 A 和 B 的时间差为 Δt，光速为 c，则距离差为 d=c?Δt，满足：√(x?x1)^2+(y?y1)^2?√(x?x2)2+(y?y2)^2=d
By combining the distance difference between another set of receiving points (such as A and C), solve the simultaneous equations.
Oh!
Jiang Xia scratched his chin, drew a coordinate axis below the formula, then drew two hyperbolas and marked dots on them.
"Brother Baoqiang, is the general solution to your equation like this?"
"Uh, more or less!"
your sister!
What cigar positioning method?! Isn't this hyperbolic positioning?! Back in my later years, I used ultrasonic flaw detectors countless times to inspect and locate damage in composite plate structures!
However, later flaw detectors are fully intelligent and display data, so they don't provide the data for you to calculate yourself!
It turns out that hyperbolic positioning can be used not only for flaw detection, but also for radio positioning.
Jiang Xia slapped his forehead and exclaimed, "Tsk, it's the eye of the beholder!"
Once you're proficient at something, you forget about its underlying principles, which can be quite frustrating!
But once you understand the principle, things will be much easier!
"Hehehe, old comrade, here comes the solution! We just need to establish receiving points at known locations, such as radio base stations or radar stations, and then use direction-finding equipment, such as a radio antenna, to measure the direction of arrival of the radio signals emitted by the target..."
"Through simple geometric relationships, the azimuth angle measured at each receiving point corresponds to a ray emanating from that receiving point, and the intersection of the two rays is the target's azimuth!"
If it were someone else, like the big guy, they would have been covered in mosquito coils by now, but the old comrade followed Jiangxia's line of thinking.
The old comrade also took a charred wooden stick and, following Jiang Xia's instructions, wrote and drew on the board.
"Wow... this thing is great! But it's just two-dimensional positioning, isn't it?"
The old man pointed to the coordinate axis and said, "Hmm, now the axis only has X and Y, and it's missing Z."
"Hehe, 3D positioning is easy too! Just add another eye in the air!"
"Hmm? After all that talk, you still want a satellite? Although your previous achievements could be considered 'launching a satellite,' I need something that's actually usable!"
"Flying Cat Car!"
The old man's eyes lit up, then dimmed again: "Yours isn't static, is it? Then the time difference Δt in this equation changes all the time, doesn't it?"
"Solving such a long series of problems is already difficult enough; adding another variable would be a nightmare!"
"So, only Jin Zhen can master this equation..." Baoqiang added, then stopped smoking.
"Hehehe! Simple, just add an integrated circuit to make a specialized computer that can analyze and calculate only these two equations, no problem!"
"Just like that digital radio station!"
Jiang Xia shook his head, his ahoge (cowlick) bobbing as he did so. "Brother Baoqiang," still smoking nearby, gave Jiang Xia a thumbs-up.
"That's awesome! Bro, let me give you a puff!"
This was the first time Baoqiang had so generously offered his cigar, and Jiang Xia, not wanting to be outdone, took a big puff right from the mouthpiece.
"I have to admire him! This kid really managed to come up with something that can replace me! It was worth risking my life to report to the old comrade!" Baoqiang said, patting Jiang Xia on the shoulder.
"You're too kind! You put in a lot of effort too! Without your cigar positioning method, this area would be a real headache!"
"So that's why we're so awesome! Hahahaha..." Both of them were beaming with pride.
The old comrade glanced at the two idiots with great interest.
"So, how do I display the specific coordinates?"
"Are you planning to have our soldiers carry this TV up a snow-covered mountain?"
"Should we assign another soldier to carry the printer or paper tape machine?"
"Oh, wait, there's also a generator and batteries. That's enough for a whole class, right?"
……
"Gah..."
The two idiots, with their mouths and noses crooked, finally stopped their insane state that was so infuriating they wanted to punch them.